Casing for lamp-sockets.



C. J. KLEIN.

GASING FOR LAMP SOCKETS.

APPLICATION FILED DBG. 7, 1908.

1,007,359. Patented 0011.311911.

MEGaCO., OF MILWAUKEE, WISCONSIN, A CORPORATION 0F yWISCONSIN.

` CASING FOR LAMP-SOCKETS.

Specicatiou of Letters Patent.

Patented Oct. 31, 1911.

Application led December 7, 1908. Serial No. 466,320.

To all 'whom 'it may concm.

Be it known that I, CHARLES J. KLEIN, a citizen of the United States, residing at Milwaukee, in the count-y of Milwaukee and State of Visconsin, have invented new.and useful Improvements in Casings for Lamp- Sockets, of which. the following is a full, clear, coneise,and exact description, reference being had tothe accompanying drawing, forming a part of this specification.

My invention relates to improvements in casings for lamp sockets'. It applies more particularly to what rare knowny as two-part casings.

It has for its objectto provide improved means forl fastening't-he t-wo parts ofthe casing` together.

It has for a further object to provide means which are operatable from the forward end of the casing to release one of the parts from the other.-

Other objects of my vinvention .will hereinafter appear.

The drawing, forming a part of this specification, is merely intended to illustrate one embodiment of my invention, and therefore it should be construedmerely in an illustrative sense and n'ot in a limit-ing way.

i formed of sheet metal.

There are, of course, various different structures t0 which my invention may be applied and in which it may be embodied.

The views in the drawing arel as follows:

Figure 1 is a vertical cross-sectional view of the casing; Fig. 2 is a similar View on the line 2-2, Fig. 1; Fig. 3 is a cross-sectional view upon the line 3 3, Fig. 1, with the parts in their normal posit-ion; Fig. 4 is a similar view with the parts moved .to release the shell from the cap; Fig. 5 is a side elevation of the casing with the cap removed from the shell, and a part of the cap broken away to expose the pawl.

The casing is formed by a shell 6 and a cap 7 which fits over the rear end of the shell and forms the back of the casing. The. cap is of dome-like form and upon the back thereof carries an internally threaded nipple 8, the inner end of which protrudes through .the cap and is suitably secured thereto. The cap and shell are preferably formed two beads,. 9 and 10, which encircle its'periphery. lThese beads provide channels around the interior of the shell. The Cap '1S Upon they shell are3 provided with a similar bead 11, near its forward end. Within the cap and upon the opposite sides thereof are arranged two spring catches or pawls, 12 and 13, which are preferably formed upon xthe ring 14, which bears against the back of the. cap and is held in place by means ofv a bent-over portion of t-he nipple 8. Each of these pawls is preferably provided with a longitudinal slot15, for a urpose which'will hereinafter appear.

.The'fouter endof each pawl is provided with a llug 16, which `has transverse portion 17 and an inclined portion 18. Also extending from each lug is a tongue or shoe 19. These' pawls serve to hold the shell to the cap and to prevent the shell and cap from'turning relatively to each other. The inner end of the shell is provided with two recesses or apertures 20, arranged one on each side thereof, into which the lugs 16 of the vpawls extend. The shell is also provided with slots 21, eX-

tending off from the holes 20 toreceivethe tongues 19. The inner wall 22 ofthe liole 20, which engages the lugs 16, is preferably bentinwardly to insure its firmly engaging the pawls. VWithin the shell 6, and tting againstl the inner wall thereof, is an insulating sleeve 23, the outer-"end of which is provided with abead 24, preferably having a knurled or roughened surface by means of which the sleeve may be turned. The sleeve' is provided with additional beads, 25 and 26. The bead25 extends outwardly into thev bead 10 upon the shell 6 and serves to hold the sleeve within the shell. In practice this bead onlv extends slightly into the channel so that the sleeve may-be removed from the shell if desired. lThe bead .26 projects inwardly and is provided for the purpose of holding the parts of the socket within thecasing. The inner end of the sleeve is provided with two openings 27 in which are arranged the pawls 12 and.13.V The inner edge ofthe cap is provided with t`wo notches 28, disposed upon opposite sides thereof, and the shell is provided with two slots 29, similarly arranged, which' `are adapted to register with the notches 28. When the casing and cap are together these notches and slots form a hole through` the casing through which pass parts of the switch mechanism. Within the cap is arranged an insulating plate 3() which engages the side .walls of the cap and has notches 31 therein `to receive the pawls, a lug 32 being arranged between `these notches, which enter the slots 15 1n the pawls to hold the plate in position.v

In order to release the shell from the cap,

the insulating sleeve is turned clock-wise within the shell. To turn the sleeve the operator'takes lhold of the knurled bead 24, on the outer end thereof, and twists the sleeve to the right. As the portions 33 of the sleeve move forward they engage the tongues19 and pass under the same and thence under the lugs 16, thereby retracting the pawls from the recesses 20 and thus releasing the shell frqm the cap. The shell may then be withdrawn from the cap. Fig.

4 shows the posit-ion of the sleeve 28 after it has been turned to retract the pawls to release the shell. To. reconnect the shell on the cap, the notches 28 and the slots 29 of the cap and shell are brought into alinement and then the shellis pushed into the cap.

lf the sleeve 23 is in the position in Fig. 4,r

then it is turned counter" clock-wise to allow the pawls to catch the shell. On the other 25 hand, if, previous to putting the shell into the cap, the insulating sleeve has been turned to its normal position the inner edge of the shell will engage the inclined portions 18 of theI pawls, thereby forcing the pawls in- 80 wardlys to permit the shell to pass into the cap, and when the shell is in position the lugs 16 of the pawls willregister with the recesses 20 and pass into the same, thereby locking the shell to the cap.

The structure which I have `prvided enables the operator to release the shell from the cap without having access to the sides or inner end of the shell, as has been required 1n previous structures. Thls feature 1s, of course, of great importance where` the socket is located in a position where the sides `or inner end of the shell are inaccessible.

vI am, of course, aware thatvarious modifications may be made 1n the structure which I have illustrated herein, for the purpose of exemplifying a way in which the features of my invention may be. embodied. It will, of course, be understood that other means may be devised which may be actuated from' the outer end of the casing to release the shell for holding saidl parts together, and a sleeve l within said caslng adapted to operate said means to disconnect said parts.

4. A casing comprising two parts, means for fastening said parts together, and an inner sleeve adapted to be turned to`-operate said means to release said parts.

5. A casing comprising two parts, a catch -for fastening said` parts together, and an -inner sleeve adapted to be operated to release said catch.

6. A casing comprising two parts, a catch for fastening said parts together, and an inner sleeve adapted to be rotated to'release said catch.

7. A casing comprising two parts, a

spring pawl carrled by one part and adapted.

to engage t-he other to fasten said parts t0- gether, and an inner sleeve arranged within the other part and adapted to,be turned to disengage said pawl.

8.` A casing comprising` two parts, a

spring pawl carried by one part and adapted toengage the other to fasten said parts together, and a rotatable inner sleeve arranged within the other part, said sleeve having a portion adapted to be forcedl between said casing and said spring pawl to disen'gage the latter. f

9. A tubular casing comprising two parts, catches for fastening said parts ..together,

iand means operatable from the outer end of said casing to release said catches.

l0. A casing comprising two parts, catches for fastening said parts together, and an inner sleeve adapted to lele operated to release said catches.

11. A casing comprising two parts, spring pawls carried by one part and adapted to engage the other to secure said parts together, and an inner sleeve arranged within the other part and adapted to be turned to disengage said pawls.

12. A casing comprising two parts,'means for fastening said parts together and preventing one part from turning relatively to the other, and means being operatable from the outer end of said casing to release said parts.

13. A casing comprising two parts, catches for fastening said parts together and preventing one part from turning relatively to ref;

the other, and a sleeve in one part adapted to be turned to release said catches.

14. A casing for lamp sockets, comprising a'cap and a tubular shell, an insulating lining arranged Within said shell and protruding from the outer end thereof to permit it to be grasped and turned.

15. A casing for lamp sockets comprising a cap, ashell and an insulating sleeve rota.- tably mounted in said shell to serve as a controlling device, said sleeve and said shell having engaging parts to retain the former within the latter, and 'said sleeve having means for facilitating the rotation thereof from the outer end of the easing.

16. A easing for lamp sooletscomprising a cap and a cylindrical shell of substantially he same diameter throughout its entire length, an insulating sleeve Within said shell. said shell and said sleeve havirig corresponding external beads formed thereon and cooperating to retain said sleeve Within said shell, and said sleeve having" formed thereon an internal bead adapted ,to form a retaining means for the mechanism tobe inclosed in the casing.

17. A easing for-lamp sockets, comprising a cap and a shell, means to secure the same together, an insulating sleeve arranged Within said shell and rotatable to release said means and corresponding beads formed on said shell and sleeve to hold the samein assembled relation.

18. A casing for lamp sockets, comprising a cap and a tubular shell, Spring paWls carried by said cap and adapted to engage said shell, and an insulating sleeve Within said shell and protruding from the outer end thereof, said sleeve being rotatable to release said parvis from' said shell.

A easing for lamp soc ets, comprising a cap and a Atubular shell, a spring pavvl carried by said cap and having a lug adapted to lit into recess in said shell,- saidy pawl being also provided with an inclined tongue adapted to he engaged by said shell to cause said spring paWl to automatically lock said cap and said shell together, and an insulating sleeve arranged within said shell and rotatable to operate said paWl to Withdraw said lug :trom the recess in said shell.

20. A casing for lamp sockets, comprising a cap and a shell, spring pawls carried by said cap and having lugs adapted to t into recesses in said shell, said pawls being also provided With inelined tongues adapted to be engaged by said shell to cause said pawls to automatically lock said shell tosaid cap, and an insulating sleeve Within said shell and protruding from the outer end thereof, said sleeve being adaptedlv to be turned to release said pawls from said shell.

21. A casing for lamp sockets, comprising a cap and a tubular shell, spring paWls carried by said cap and having lugs adapted to engage'said shell 'to lock the Asame to said cap, an insulating sleeve Within said shell. A

and protruding from the outer end thereof, said sleeve being adapted to be turnedto release said pawls from said shell, and corresponding beads formed upon said shell and said sleeve to lhold the same in assembled relation.

22.' A. casing Jfor lamp sockets, comprising a Cap and a tubular shell, spring paWls carried by said cap and' adapted to engage said tubular shell and lock the same to said cap, an insulating plate in said cap, lugs on said plate adapted toextend into slots in said spring pawls, and means operatable from the outer end of said shell to release said paWls from said shell. In Witness whereof, I have hereunto subscribed my name in the presenceof two Witnesses.

CHARLES J: KLEIN.

lVitnesses t i FRANK H. HUBBARD, SHEPLER NV. FITZ GERALD.

tenas ei this patent may .be obtained for five cents each, by addressing vtile Commissioner of Ratents,

Washington, D. G. 

